JP7255122B2 - Liquid ejector - Google Patents

Liquid ejector Download PDF

Info

Publication number
JP7255122B2
JP7255122B2 JP2018185891A JP2018185891A JP7255122B2 JP 7255122 B2 JP7255122 B2 JP 7255122B2 JP 2018185891 A JP2018185891 A JP 2018185891A JP 2018185891 A JP2018185891 A JP 2018185891A JP 7255122 B2 JP7255122 B2 JP 7255122B2
Authority
JP
Japan
Prior art keywords
flow path
common
discharge
heating member
channel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
JP2018185891A
Other languages
Japanese (ja)
Other versions
JP2020055153A (en
Inventor
一浩 西井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Brother Industries Ltd
Original Assignee
Brother Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Brother Industries Ltd filed Critical Brother Industries Ltd
Priority to JP2018185891A priority Critical patent/JP7255122B2/en
Priority to US16/565,674 priority patent/US11052659B2/en
Priority to EP19196785.0A priority patent/EP3628493B1/en
Publication of JP2020055153A publication Critical patent/JP2020055153A/en
Application granted granted Critical
Publication of JP7255122B2 publication Critical patent/JP7255122B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B41J2/14—Structure thereof only for on-demand ink jet heads
    • B41J2/14201—Structure of print heads with piezoelectric elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B41J2/14—Structure thereof only for on-demand ink jet heads
    • B41J2/14201—Structure of print heads with piezoelectric elements
    • B41J2/14233—Structure of print heads with piezoelectric elements of film type, deformed by bending and disposed on a diaphragm
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B41J2/14—Structure thereof only for on-demand ink jet heads
    • B41J2/14201—Structure of print heads with piezoelectric elements
    • B41J2/14233—Structure of print heads with piezoelectric elements of film type, deformed by bending and disposed on a diaphragm
    • B41J2002/14266—Sheet-like thin film type piezoelectric element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B41J2/14—Structure thereof only for on-demand ink jet heads
    • B41J2/14201—Structure of print heads with piezoelectric elements
    • B41J2002/14306—Flow passage between manifold and chamber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B41J2/14—Structure thereof only for on-demand ink jet heads
    • B41J2002/14362—Assembling elements of heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B41J2/14—Structure thereof only for on-demand ink jet heads
    • B41J2002/14459—Matrix arrangement of the pressure chambers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B41J2/14—Structure thereof only for on-demand ink jet heads
    • B41J2002/14491—Electrical connection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2202/00—Embodiments of or processes related to ink-jet or thermal heads
    • B41J2202/01—Embodiments of or processes related to ink-jet heads
    • B41J2202/08—Embodiments of or processes related to ink-jet heads dealing with thermal variations, e.g. cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2202/00—Embodiments of or processes related to ink-jet or thermal heads
    • B41J2202/01—Embodiments of or processes related to ink-jet heads
    • B41J2202/12—Embodiments of or processes related to ink-jet heads with ink circulating through the whole print head
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2202/00—Embodiments of or processes related to ink-jet or thermal heads
    • B41J2202/01—Embodiments of or processes related to ink-jet heads
    • B41J2202/20—Modules
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2202/00—Embodiments of or processes related to ink-jet or thermal heads
    • B41J2202/01—Embodiments of or processes related to ink-jet heads
    • B41J2202/21—Line printing

Description

本技術は、液体、例えばインクを吐出する液体吐出装置に関する。 The present technology relates to a liquid ejecting apparatus that ejects liquid such as ink.

従来、複数のノズルに連通する共通流路が形成された流路部材と、流路部材に液体を供給する流路が形成されたリザーバとを備える液適吐出装置が開示されている。液適吐出装置はインクをノズルから記録媒体、例えば紙に吐出し、画像を形成する。液適吐出装置のリザーバには、リザーバの長手方向に延びる熱伝導部が設けられている。熱伝導部から液体に熱が伝導され、液体の温度や粘度が調整される（例えば特許文献１参照）。 2. Description of the Related Art Conventionally, a liquid ejection device has been disclosed that includes a channel member in which a common channel communicating with a plurality of nozzles is formed, and a reservoir in which a channel for supplying liquid to the channel member is formed. A liquid ejection device ejects ink from nozzles onto a recording medium such as paper to form an image. The reservoir of the liquid ejection device is provided with a heat conducting portion extending in the longitudinal direction of the reservoir. Heat is conducted from the heat conducting portion to the liquid, and the temperature and viscosity of the liquid are adjusted (see, for example, Patent Document 1).

国際公開第２０１２／１６５３７８号公報International Publication No. 2012/165378

リザーバから共通流路を通ってノズルまで液体が移動する間に液体の温度は低下し、液体の粘度が高くなるおそれがある。 As the liquid travels from the reservoir through the common flow path to the nozzle, the temperature of the liquid may drop and the viscosity of the liquid may increase.

本開示は斯かる事情に鑑みてなされたものであり、ノズルから吐出される液体の温度や粘度を適切に制御することができる液体吐出装置を提供することを目的とする。 The present disclosure has been made in view of such circumstances, and an object of the present disclosure is to provide a liquid ejection device capable of appropriately controlling the temperature and viscosity of liquid ejected from a nozzle.

本開示に係る液体吐出装置は、第１方向に並んだ複数の個別電極と、前記第１方向に沿って並んだ複数の個別流路と、前記第１方向に沿って並んだ複数のノズルと、前記複数の個別流路と連通する共通流路と、前記共通流路と連通する開口とを備える吐出部材と、少なくとも一部が、前記吐出部材に当接する加熱部材とを備え、前記複数の個別電極のうち、前記第１方向において端に位置する個別電極と、前記開口とは、前記第１方向において離れており、前記加熱部材の少なくとも一部は、前記端に位置する前記個別電極と前記開口との間にて、前記吐出部材に当接する部分である。 A liquid ejection device according to the present disclosure includes a plurality of individual electrodes arranged in a first direction, a plurality of individual channels arranged in the first direction, and a plurality of nozzles arranged in the first direction. a discharge member having a common channel communicating with the plurality of individual channels; an opening communicating with the common channel; and a heating member at least a part of which contacts the discharge member, Of the individual electrodes, the individual electrode positioned at the end in the first direction is separated from the opening in the first direction, and at least a portion of the heating member is positioned at the end of the individual electrode. It is a portion that abuts on the ejection member between the opening.

本開示に係る液体吐出装置にあっては、端に位置する個別電極と開口との間において、加熱部材は吐出部材に接触し、個別電極の近傍において液体を加熱し、液体の温度や粘度を適切に調整することができる。 In the liquid ejection device according to the present disclosure, the heating member is in contact with the ejection member between the individual electrode positioned at the end and the opening, heats the liquid in the vicinity of the individual electrode, and adjusts the temperature and viscosity of the liquid. can be properly adjusted.

実施の形態１に係るプリンタを略示する平面図である。1 is a plan view schematically showing a printer according to Embodiment 1; FIG. インクジェットヘッドを略示する平面図である。1 is a plan view schematically showing an inkjet head; FIG. 液体吐出装置を略示する分解斜視図である。1 is an exploded perspective view schematically showing a liquid ejection device; FIG. 液体吐出装置を略示する縦断面図である。1 is a longitudinal sectional view schematically showing a liquid ejection device; FIG. 液体吐出装置を略示する部分拡大縦断面図である。FIG. 2 is a partially enlarged vertical cross-sectional view schematically showing a liquid ejection device; アクチュエータ及び流路部材を略示する部分拡大断面図である。4 is a partially enlarged cross-sectional view schematically showing an actuator and a channel member; FIG. 加熱部材を略示する分解斜視図である。4 is an exploded perspective view schematically showing a heating member; FIG. ボディを略示する底面図である。It is a bottom view which shows a body roughly. 凸部、アクチュエータ及び流路部材を略示する模式的平面図である。FIG. 4 is a schematic plan view schematically showing a convex portion, an actuator, and a channel member; 実施の形態１の構成を一部変更した変更例１に係るボディを略示する底面図である。FIG. 11 is a bottom view schematically showing a body according to Modification 1 in which the configuration of Embodiment 1 is partially modified; 実施の形態１の構成を一部変更した変更例２に係るボディを略示する底面図である。FIG. 11 is a bottom view schematically showing a body according to Modification 2 in which the configuration of Embodiment 1 is partially modified; 実施の形態１の構成を一部変更した変更例３に係る第１凸部、第２凸部、アクチュエータ及び流路部材を略示する模式的平面図である。FIG. 10 is a schematic plan view schematically showing a first convex portion, a second convex portion, an actuator, and a flow path member according to Modification 3, which is a partial modification of the configuration of Embodiment 1; 実施の形態１の構成を一部変更した変更例４に係る液体吐出装置を略示する部分拡大縦断面図である。FIG. 11 is a partial enlarged vertical cross-sectional view schematically showing a liquid ejection device according to Modification 4 in which the configuration of Embodiment 1 is partially modified; 実施の形態１の構成を一部変更した変更例５に係る液体吐出装置を略示する部分拡大縦断面図である。FIG. 11 is a partially enlarged vertical cross-sectional view schematically showing a liquid ejection device according to Modification 5 in which the configuration of Embodiment 1 is partially modified; 実施の形態２に係るアクチュエータ及び流路部材を略示する模式的平面図である。FIG. 10 is a schematic plan view schematically showing an actuator and a channel member according to Embodiment 2; 実施の形態３に係るアクチュエータ及び流路部材を略示する模式的平面図である。FIG. 11 is a schematic plan view schematically showing an actuator and a channel member according to Embodiment 3; 実施の形態４に係るアクチュエータ及び流路部材を略示する模式的平面図である。FIG. 11 is a schematic plan view schematically showing an actuator and a channel member according to Embodiment 4; 実施の形態５に係るアクチュエータ及び流路部材を略示する模式的平面図である。FIG. 11 is a schematic plan view schematically showing an actuator and a channel member according to Embodiment 5; 実施の形態６に係るアクチュエータ及び流路部材を略示する模式的平面図である。FIG. 11 is a schematic plan view schematically showing an actuator and a channel member according to Embodiment 6;

（実施の形態１）
以下本発明を実施の形態１に係るプリンタを示す図面に基づいて説明する。図１は、プリンタ１を略示する平面図である。図１において、記録用紙１００（記録媒体）の搬送方向はプリンタ１の前後方向に対応する。また記録用紙１００の幅方向はプリンタ１の左右方向に対応する。また前後方向及び左右方向と直交する方向、即ち図１の紙面垂直方向はプリンタ１の上下方向に対応する。 (Embodiment 1)
The present invention will be described below with reference to the drawings showing the printer according to the first embodiment. FIG. 1 is a plan view schematically showing the printer 1. FIG. In FIG. 1, the conveying direction of the recording paper 100 (recording medium) corresponds to the front-rear direction of the printer 1 . The width direction of the recording paper 100 corresponds to the horizontal direction of the printer 1 . A direction orthogonal to the front-rear direction and the left-right direction, that is, the direction perpendicular to the paper surface of FIG.

図１に示すように、プリンタ１は、筐体２内に収容されたプラテン３、四つのインクジェットヘッド４、二つの搬送ローラ５、６、及び制御装置７等を備える。 As shown in FIG. 1, the printer 1 includes a platen 3 housed in a housing 2, four inkjet heads 4, two transport rollers 5 and 6, a control device 7, and the like.

プラテン３の上面には、記録用紙１００が載置される。四つのインクジェットヘッド４は、プラテン３の上方において、搬送方向に並んでいる。各インクジェットヘッド４は、いわゆるラインタイプのヘッドである。インクジェットヘッド４には、図示しないインクタンクからインクが供給される。四つのインクジェットヘッド４には、異なる色のインクが供給される。 A recording sheet 100 is placed on the upper surface of the platen 3 . The four inkjet heads 4 are arranged in the transport direction above the platen 3 . Each inkjet head 4 is a so-called line type head. Ink is supplied to the inkjet head 4 from an ink tank (not shown). Different color inks are supplied to the four inkjet heads 4 .

図１に示すように、二つの搬送ローラ５、６は、プラテン３に対して後側と前側にそれぞれ配置されている。二つの搬送ローラ５、６は、図示しないモータによってそれぞれ駆動され、プラテン３上の記録用紙１００を前方へ搬送する。 As shown in FIG. 1, the two transport rollers 5 and 6 are arranged on the rear side and the front side of the platen 3, respectively. The two transport rollers 5 and 6 are driven by motors (not shown) to transport the recording paper 100 on the platen 3 forward.

制御装置７は、ＦＰＧＡ(Field Programmable Gate Array)、ＥＥＰＲＯＭ（Electrically Erasable Programmable Read-Only Memory）、ＲＡＭ（Random Access Memory）等を備える。なお制御装置７はＣＰＵ（Central Processing Unit）、又はＡＳＩＣ（Application Specific Integrated Circuit）等を備えてもよい。制御装置７は、ＰＣ等の外部装置９とデータ通信可能に接続されており、外部装置９から送られた印刷データに基づいて、プリンタ１の各部を制御する。 The control device 7 includes an FPGA (Field Programmable Gate Array), an EEPROM (Electrically Erasable Programmable Read-Only Memory), a RAM (Random Access Memory), and the like. Note that the control device 7 may include a CPU (Central Processing Unit), an ASIC (Application Specific Integrated Circuit), or the like. The control device 7 is connected to an external device 9 such as a PC so as to be capable of data communication, and controls each section of the printer 1 based on print data sent from the external device 9 .

図２は、インクジェットヘッド４を略示する平面図である。図２に示すように、インクジェットヘッド４は複数の液体吐出装置１１を備える。複数の液体吐出装置１１は千鳥状に保持板１０に取り付けられている。液体吐出装置１１は左右方向に並んだ複数のノズル３０ｄ（図６参照）を有する。なお図２は略図であり、図２のノズルの列数と図９のノズルの列数とは異なる。 FIG. 2 is a plan view schematically showing the inkjet head 4. FIG. As shown in FIG. 2, the inkjet head 4 has a plurality of liquid ejecting devices 11 . A plurality of liquid ejection devices 11 are attached to the holding plate 10 in a zigzag pattern. The liquid ejection device 11 has a plurality of nozzles 30d (see FIG. 6) arranged in the horizontal direction. 2 is a schematic diagram, and the number of nozzle rows in FIG. 2 and the number of nozzle rows in FIG. 9 are different.

制御装置７は、搬送ローラ５、６を駆動するモータを制御して、二つの搬送ローラ５、６に記録用紙１００を搬送方向に搬送させる。また、これとともに、制御装置７は、四つのインクジェットヘッド４を制御し、ノズル３０ｄから記録用紙１００に向けてインクを吐出させる。これにより、記録用紙１００に画像が印刷される。 The control device 7 controls the motors that drive the conveying rollers 5 and 6 to cause the two conveying rollers 5 and 6 to convey the recording paper 100 in the conveying direction. Along with this, the control device 7 controls the four inkjet heads 4 to eject ink from the nozzles 30 d toward the recording paper 100 . Thus, an image is printed on the recording paper 100 .

図３は、液体吐出装置１１を略示する分解斜視図、図４は、液体吐出装置１１を略示する縦断面図、図５は、液体吐出装置１１を略示する部分拡大縦断面図である。液体吐出装置１１は、平面視矩形状の第１フレーム２１を備える。第１フレーム２１の中央には開口２１ａが設けられている。第１フレーム２１の左端部には上下に貫通した四つの貫通孔２１ｂが前後方向に並んでいる。 3 is an exploded perspective view schematically showing the liquid ejection device 11, FIG. 4 is a longitudinal sectional view schematically showing the liquid ejection device 11, and FIG. 5 is a partially enlarged longitudinal sectional view schematically showing the liquid ejection device 11. be. The liquid ejection device 11 includes a first frame 21 that is rectangular in plan view. An opening 21 a is provided in the center of the first frame 21 . The left end of the first frame 21 has four through-holes 21b vertically lined up in the front-rear direction.

開口２１ａの内側に加熱部材２８が設けられている。加熱部材２８の上側には板ばね２９が設けられている。板ばね２９には、前後に並んだ二つの位置決め孔２９ａが形成されている。二つの位置決め孔２９ａは後述する二つのボス２４ｂに対応する。板ばね２９の上側には制御基板３１が設けられている。板ばね２９は制御基板３１を上方に付勢している。板ばね２９によって、加熱部材２８と制御基板３１との間には空間が設けられており、板ばね２９はスペーサとして機能する。加熱部材２８の詳細は後述する。 A heating member 28 is provided inside the opening 21a. A leaf spring 29 is provided on the upper side of the heating member 28 . The leaf spring 29 is formed with two positioning holes 29a aligned in the front-rear direction. The two positioning holes 29a correspond to two bosses 24b, which will be described later. A control board 31 is provided above the plate spring 29 . The leaf spring 29 urges the control board 31 upward. A space is provided between the heating member 28 and the control board 31 by the leaf spring 29, and the leaf spring 29 functions as a spacer. Details of the heating member 28 will be described later.

第１フレーム２１の上側に、平面視矩形状の第２フレーム３２が設けられている。第２フレーム３２の中央には、第１フレーム２１の開口２１ａに対応する開口３２ａが設けられている。開口３２ａの内周面に、開口３２ａの中央に向かってに突出した支持環３２ｃが設けられている。第２フレーム３２の左端部には、第１フレーム２１の貫通孔２１ｂに対応し、上下に貫通した四つの貫通孔３２ｂが前後方向に並んでいる。 A rectangular second frame 32 is provided above the first frame 21 . An opening 32 a corresponding to the opening 21 a of the first frame 21 is provided in the center of the second frame 32 . A support ring 32c protruding toward the center of the opening 32a is provided on the inner peripheral surface of the opening 32a. At the left end of the second frame 32, four through-holes 32b corresponding to the through-holes 21b of the first frame 21 are aligned in the front-rear direction.

第１フレーム２１及び第２フレーム３２は上下方向に重なっている。第１フレーム２１の開口２１ａの上側に第２フレーム３２の開口３２ａは配置され、第１フレーム２１の貫通孔２１ｂの上側に第２フレーム３２の貫通孔３２ｂは配置される。第１フレーム２１及び第２フレーム３２の間にはシール部材３３が設けられており、第１フレーム２１及び第２フレーム３２の間の隙間を液密に封止している。 The first frame 21 and the second frame 32 overlap vertically. The opening 32 a of the second frame 32 is arranged above the opening 21 a of the first frame 21 , and the through hole 32 b of the second frame 32 is arranged above the through hole 21 b of the first frame 21 . A seal member 33 is provided between the first frame 21 and the second frame 32 to liquid-tightly seal the gap between the first frame 21 and the second frame 32 .

第１フレーム２１の開口２１ａ及び第２フレーム３２の開口３２ａの内側に加熱部材２８及び制御基板３１は配置されている。第２フレーム３２の支持環３２ｃ上に保持環３４が設けられている。支持環３２ｃは保持環３４を支持する。保持環３４の内側に放熱板３５が設けられている。保持環３４は放熱板３５を保持する。放熱板３５及び第２フレーム３２の上側にアライメントフレーム３６が設けられている。 The heating member 28 and the control board 31 are arranged inside the opening 21 a of the first frame 21 and the opening 32 a of the second frame 32 . A holding ring 34 is provided on the support ring 32 c of the second frame 32 . The support ring 32c supports the retaining ring 34. As shown in FIG. A heat sink 35 is provided inside the retaining ring 34 . The retaining ring 34 retains the radiator plate 35 . An alignment frame 36 is provided above the heat sink 35 and the second frame 32 .

第１フレーム２１の下側に、板状の流路部材３０が設けられている。流路部材３０の上面にアクチュエータ２０が設けられている。アクチュエータ２０は開口２１ａの内側に配置されている。 A plate-like channel member 30 is provided below the first frame 21 . An actuator 20 is provided on the upper surface of the channel member 30 . The actuator 20 is arranged inside the opening 21a.

図６は、アクチュエータ２０及び流路部材３０を略示する部分拡大断面図である。流路部材３０は、それぞれ流路を画定する貫通孔が形成された複数のプレートから構成されている。流路部材３０は、ノズルプレート３０ａ、振動板３０ｂを備える。ノズルプレート３０ａには、複数のノズル３０ｄが左右方向（図６の紙面垂直方向）に並んでいる。複数のノズル３０ｄそれぞれの上側に圧力室３０ｃが形成されている。圧力室３０ｃは後述する共通流路３０ｇに連なる。 FIG. 6 is a partially enlarged cross-sectional view schematically showing the actuator 20 and the flow channel member 30. As shown in FIG. The flow path member 30 is composed of a plurality of plates each having a through hole defining a flow path. The channel member 30 includes a nozzle plate 30a and a vibration plate 30b. A plurality of nozzles 30d are arranged in the horizontal direction (perpendicular to the paper surface of FIG. 6) on the nozzle plate 30a. A pressure chamber 30c is formed above each of the plurality of nozzles 30d. The pressure chamber 30c is connected to a common flow path 30g, which will be described later.

アクチュエータ２０は振動板３０ｂの上に配置されている。振動板３０ｂは圧力室３０ｃの上側に設けられており、圧力室３０ｃの上部の開口を塞いでいる。アクチュエータ２０には二つの圧電層２０ｃが積層されている。二枚の圧電層２０ｃの間に共通電極２０ｄが設けられている。共通電極２０ｄは常にグランド電位に保持されている。アクチュエータ２０は左右方向（第１方向）に並んだ複数の個別電極２０ｂを備える。複数の個別電極２０ｂは上側の圧電層２０ｃに設けられており、複数の圧力室３０ｃの上側にそれぞれ配置されている。複数の個別電極２０ｂは制御基板３１とそれぞれ接続されている。 The actuator 20 is arranged on the diaphragm 30b. The diaphragm 30b is provided on the upper side of the pressure chamber 30c and closes the upper opening of the pressure chamber 30c. The actuator 20 is laminated with two piezoelectric layers 20c. A common electrode 20d is provided between the two piezoelectric layers 20c. The common electrode 20d is always held at the ground potential. The actuator 20 includes a plurality of individual electrodes 20b arranged in the horizontal direction (first direction). The plurality of individual electrodes 20b are provided on the upper piezoelectric layer 20c, and are arranged above the plurality of pressure chambers 30c. The plurality of individual electrodes 20b are connected to the control board 31 respectively.

図３、図４に示すように、アクチュエータ２０の上面に、ＣＯＦ２２が、平面視環状の接合部材２３を介して接合されている。接合部材２３としては、両面テープやシート状の接着剤等が挙げられる。アクチュエータ２０の上面には複数の個別電極に対応する複数の接点や共通電極に対応する複数の接点が形成されている。 As shown in FIGS. 3 and 4, the COF 22 is joined to the upper surface of the actuator 20 via a joining member 23 that is annular in plan view. Examples of the joining member 23 include a double-sided tape and a sheet-like adhesive. A plurality of contacts corresponding to a plurality of individual electrodes and a plurality of contacts corresponding to a common electrode are formed on the upper surface of the actuator 20 .

アクチュエータ２０の上面に形成されたこれらの複数の接点は、ＣＯＦ２２に設けられた複数の接点と、それぞれバンプで接合されている。ＣＯＦ２２の上面に加熱部材２８が設けられている。ＣＯＦ２２の左右方向の幅は加熱部材２８の左右方向の幅よりも長く、ＣＯＦ２２の左端部及び右端部は上側に折り曲げられ、加熱部材２８の上面の左端部及び右端部を覆っている。 These multiple contacts formed on the upper surface of the actuator 20 are connected to multiple contacts provided on the COF 22 by bumps. A heating member 28 is provided on the upper surface of the COF 22 . The width of the COF 22 in the left-right direction is longer than the width of the heating member 28 in the left-right direction.

図７は、加熱部材２８を略示する分解斜視図である。加熱部材２８は、板状のボディ２４と、フィルムヒータ２５とを備える。液体吐出装置１１は、第１サーミスタ２６と、第２サーミスタ２７とを備える。ボディ２４は板部２４ｅを備え、板部２４ｅの左縁部及び右縁部は上方に突出した突出部２４ｄをそれぞれ形成する。板部２４ｅの前縁部及び後縁部それぞれに上下に貫通した貫通孔２４ｃ１、２４ｃ２が形成されている。 FIG. 7 is an exploded perspective view schematically showing the heating member 28. FIG. The heating member 28 has a plate-like body 24 and a film heater 25 . The liquid ejection device 11 includes a first thermistor 26 and a second thermistor 27 . The body 24 has a plate portion 24e, and the left edge portion and the right edge portion of the plate portion 24e form projecting portions 24d that protrude upward. Through holes 24c1 and 24c2 are formed vertically through the front and rear edges of the plate portion 24e.

貫通孔２４ｃ１は前後に延びた長孔であり、貫通孔２４ｃ２は丸孔である。貫通孔２４ｃ１、２４ｃ２は、板部２４ｅの左右方向中央部に配置されている。二つの貫通孔２４ｃ１、２４ｃ２は、接合部材２３をボディ２４に貼り付ける工程において、ボディ２４の治具に対する位置決めのために使用される。二つの貫通孔２４ｃ１、２４ｃ２の間に二つのボス２４ｂが前後方向に並んでいる。ボス２４ｂは板部２４ｅから上方に突出している。ボディ２４の熱伝導率は流路部材３０よりも高く、例えば、ボディ２４はアルミニウム部材によって構成されており、流路部材３０はステンレス鋼材によって構成されている。 The through hole 24c1 is an elongated hole extending forward and backward, and the through hole 24c2 is a round hole. The through holes 24c1 and 24c2 are arranged in the center of the plate portion 24e in the left-right direction. The two through holes 24c1 and 24c2 are used for positioning the body 24 with respect to the jig in the process of attaching the joint member 23 to the body 24. As shown in FIG. Two bosses 24b are arranged in the front-rear direction between the two through-holes 24c1 and 24c2. The boss 24b protrudes upward from the plate portion 24e. The thermal conductivity of the body 24 is higher than that of the flow path member 30. For example, the body 24 is made of an aluminum member, and the flow path member 30 is made of stainless steel.

フィルムヒータ２５はフィルム部２５ｄを備える。フィルム部２５ｄはポリイミドなどの樹脂で形成されたフィルムである。フィルム部２５ｄには、二つのボス２４ｂに対応し、上下に貫通した二つの貫通孔２５ｂが形成されている。また板部２４ｅの後縁部に形成された貫通孔２４ｃ２に対応し、空気が通流する通流孔２５ａがフィルム部２５ｄに設けられている。またフィルム部２５ｄには電熱線２５ｅが形成されている。フィルム部２５ｄの上面には第２サーミスタ２７が設けられている。第２サーミスタ２７によりフィルム部２５ｄの温度を計測することができる。第２サーミスタ２７は配線部分２７ａを介して、制御装置７と接続されている。 The film heater 25 has a film portion 25d. The film portion 25d is a film made of resin such as polyimide. The film portion 25d is formed with two through holes 25b penetrating vertically corresponding to the two bosses 24b. The film portion 25d is provided with a flow hole 25a through which air flows, corresponding to the through hole 24c2 formed in the rear edge portion of the plate portion 24e. A heating wire 25e is formed on the film portion 25d. A second thermistor 27 is provided on the upper surface of the film portion 25d. The second thermistor 27 can measure the temperature of the film portion 25d. The second thermistor 27 is connected to the control device 7 via a wiring portion 27a.

フィルムヒータ２５はボディ２４の上面に設けられている。二つのボス２４ｂは二つの貫通孔２５ｂにそれぞれ挿入され、フィルム部２５ｄから上方に突出し、板ばね２９の二つの位置決め孔２９ａに挿入される。ボス２４ｂの位置決め孔２９ａへの挿入によって、板ばね２９の前後左右位置が決定される。 A film heater 25 is provided on the upper surface of the body 24 . The two bosses 24b are inserted into the two through-holes 25b, protrude upward from the film portion 25d, and are inserted into the two positioning holes 29a of the leaf spring 29. As shown in FIG. The front, rear, left, and right positions of the leaf spring 29 are determined by inserting the boss 24b into the positioning hole 29a.

貫通孔２４ｃ２の上に通流孔２５ａが配置されており、貫通孔２４ｃ２はフィルム部２５ｄによって塞がれていない。そのため、通流孔２５ａ、貫通孔２４ｃ２を空気は通流することができる。一方、貫通孔２４ｃ１はフィルム部２５ｄによって塞がれている。フィルム部２５ｄの貫通孔２４ｃ１の上に位置する部分には電熱線２５ｅは配置されていない。もし、フィルム部２５ｄの貫通孔２４ｃ１の上に位置する部分、すなわちフィルム部２５ｄの貫通孔２４ｃ１の開口を塞いでいる部分に、電熱線２５ｅを配置しても、その部分で発生した熱をボディ２４に伝えることはできない。フィルム部２５ｄの貫通孔２４ｃ１の上に位置する部分に電熱線２５ｅを配置しないことで無駄な電力を消費することを防止できる。 The flow hole 25a is arranged above the through hole 24c2, and the through hole 24c2 is not blocked by the film portion 25d. Therefore, air can flow through the flow hole 25a and the through hole 24c2. On the other hand, the through hole 24c1 is closed by the film portion 25d. The heating wire 25e is not arranged in the portion of the film portion 25d located above the through hole 24c1. Even if the heating wire 25e is arranged in a portion of the film portion 25d located above the through hole 24c1, that is, in a portion of the film portion 25d that blocks the opening of the through hole 24c1, the heat generated in that portion is transferred to the body. I can't tell 24. By not arranging the heating wire 25e in the portion of the film portion 25d above the through hole 24c1, it is possible to prevent unnecessary power consumption.

第１サーミスタ２６は流路部材３０の上面に配置され、流路部材３０の温度を検出する。第１サーミスタ２６は制御装置７と接続されている。制御装置７は第１サーミスタ２６と第２サーミスタ２７とで検出した温度に基づいて、電熱線２５ｅへの供給電流を制御する。 The first thermistor 26 is arranged on the upper surface of the channel member 30 and detects the temperature of the channel member 30 . The first thermistor 26 is connected with the controller 7 . Based on the temperatures detected by the first thermistor 26 and the second thermistor 27, the controller 7 controls the current supplied to the heating wire 25e.

図８は、ボディ２４を略示する底面図、図９は、凸部２４ａ、アクチュエータ２０及び流路部材３０を略示する模式的平面図である。図５、図８に示すように、ボディ２４の底面の周縁部には、下方に突出した環状の凸部２４ａが設けられている。図９に示すように、凸部２４ａはアクチュエータ２０の上面のうち複数の個別電極２０ｂの周囲の部分と、ＣＯＦ２２を介して当接する。凸部２４ａはＣＯＦ２２を介してアクチュエータ２０の上面の周縁部に接触している。 8 is a bottom view schematically showing the body 24, and FIG. 9 is a schematic plan view schematically showing the convex portion 24a, the actuator 20 and the flow path member 30. As shown in FIG. As shown in FIGS. 5 and 8, the bottom surface of the body 24 is provided with an annular convex portion 24a protruding downward from the periphery thereof. As shown in FIG. 9, the convex portion 24a abuts on the portion of the upper surface of the actuator 20 surrounding the plurality of individual electrodes 20b via the COF 22. As shown in FIG. The convex portion 24a is in contact with the peripheral portion of the upper surface of the actuator 20 via the COF 22. As shown in FIG.

前述した環状の接合部材２３は凸部２４ａとＣＯＦ２２との間に配置されており、凸部２４ａは接合部材２３でＣＯＦ２２と接着されている。ＣＯＦ２２とアクチュエータ２０との間には、アクチュエータ２０とＣＯＦ２２を固定するための補強バンプが形成されている。補強バンプは凸部２４ａによって押さえられた部分に配置される。 The annular joint member 23 described above is arranged between the convex portion 24 a and the COF 22 , and the convex portion 24 a is adhered to the COF 22 by the joint member 23 . A reinforcing bump is formed between the COF 22 and the actuator 20 for fixing the actuator 20 and the COF 22 . The reinforcing bumps are arranged on the portions held down by the projections 24a.

流路部材３０は、液体が供給される二つの供給口３０ｅを備える。二つの供給口３０ｅは流路部材３０の左縁部において前後方向に並んでいる。流路部材３０の左縁部において、二つの供給口３０ｅの間に液体を排出する二つの排出口３０ｆが前後方向に並んでいる。図９に示すように、凸部２４ａの左部分は、供給口３０ｅ及び排出口３０ｆと、最も左端に位置する個別電極２０ｂとの間に配置されている。なお、流路部材３０には、供給口３０ｅの開口及び排出口３０ｆの開口に、跨るように配置されたフィルタ４０が設けられていてもよい。 The channel member 30 has two supply ports 30e through which liquid is supplied. The two supply ports 30 e are arranged in the front-rear direction at the left edge of the flow path member 30 . At the left edge of the channel member 30, two discharge ports 30f for discharging liquid are arranged in the front-rear direction between the two supply ports 30e. As shown in FIG. 9, the left portion of the projection 24a is arranged between the supply port 30e and the discharge port 30f and the leftmost individual electrode 20b. In addition, the flow path member 30 may be provided with a filter 40 arranged to straddle the opening of the supply port 30e and the opening of the discharge port 30f.

一方の供給口３０ｅと、この供給口３０ｅに隣り合う一方の排出口３０ｆとは、平面視Ｕ状をなす共通流路３０ｇによって連結されている。共通流路３０ｇは流路部材３０の内部に形成されており、各圧力室３０ｃに連なる。 One supply port 30e and one discharge port 30f adjacent to this supply port 30e are connected by a common flow path 30g which is U-shaped in plan view. 30 g of common flow paths are formed inside the flow-path member 30, and are connected with each pressure chamber 30c.

また他方の供給口３０ｅと、この供給口３０ｅに隣り合う他方の排出口３０ｆとは、平面視Ｕ状をなす共通流路３０ｇによって連結されている。共通流路３０ｇは流路部材３０の内部に形成されており、各圧力室３０ｃに連なる。 The other supply port 30e and the other discharge port 30f adjacent to this supply port 30e are connected by a common flow path 30g which is U-shaped in plan view. 30 g of common flow paths are formed inside the flow-path member 30, and are connected with each pressure chamber 30c.

インクタンクから供給口３０ｅに供給されたインクは共通流路３０ｇを通って圧力室３０ｃに至る。制御装置７は共通電極２０ｄ及び個別電極２０ｂの間に電圧を印加し、圧電層２０ｃを駆動させて、振動板３０ｂを振動させる。振動板３０ｂの振動によって、圧力室３０ｃ内の圧力が正圧となって、ノズル３０ｄからインクが吐出され、また圧力室３０ｃ内の圧力が負圧となって、共通流路３０ｇから圧力室３０ｃにインクが供給される。 Ink supplied from the ink tank to the supply port 30e reaches the pressure chamber 30c through the common flow path 30g. The control device 7 applies a voltage between the common electrode 20d and the individual electrodes 20b, drives the piezoelectric layer 20c, and vibrates the diaphragm 30b. Due to the vibration of the vibration plate 30b, the pressure in the pressure chamber 30c becomes positive pressure, ink is ejected from the nozzle 30d, the pressure in the pressure chamber 30c becomes negative pressure, and the pressure in the pressure chamber 30c is discharged from the common flow path 30g. ink is supplied to the

圧力室３０ｃに供給されなかったインクは、共通流路３０ｇを通って、流路部材３０の前縁部又は後縁部に沿って移動し、その後、右縁部にてＵターンし、流路部材３０の前後方向中央部を左方向に移動し、排出口３０ｆに至る。排出口３０ｆから排出されたインクはインクタンクに戻り、再び供給口３０ｅに供給される。ノズル３０ｄからインクを吐出する液体吐出装置１１の印刷動作中において、共通流路３０ｇ内のインクは供給口３０ｅから排出口３０ｆに向かって循環される。 Ink that has not been supplied to the pressure chamber 30c passes through the common flow path 30g, moves along the front edge or the rear edge of the flow path member 30, then makes a U-turn at the right edge, and enters the flow path. The central portion of the member 30 in the front-rear direction is moved leftward to reach the discharge port 30f. The ink discharged from the discharge port 30f returns to the ink tank and is supplied to the supply port 30e again. During the printing operation of the liquid ejection device 11 that ejects ink from the nozzles 30d, the ink in the common flow path 30g is circulated from the supply port 30e toward the discharge port 30f.

ボディ２４の熱は凸部２４ａを介して、流路部材３０の周縁部に伝達され、前記周縁部から流路部材３０の中央部に伝達され、流路部材３０全体が加熱される。また凸部２４ａの左部分は、前後方向に延びる細長い部分であって、供給口３０ｅ及び排出口３０ｆと、最も左端に位置する個別電極２０ｂとの間に配置されている。即ち共通流路３０ｇの近傍に凸部２４ａが配置されているので、共通流路３０ｇを通流するインクに加熱部材２８の熱を直ちに伝達させて、フィードバック制御を精度よく実現させることができる。またＣＯＦ２２の上に加熱部材２８が配置されているので、ＣＯＦ２２の外側に加熱部材２８が配置された場合に比べて、共通流路３０ｇの長手方向における液体吐出装置の寸法を短縮させることができる。 The heat of the body 24 is transmitted to the peripheral portion of the flow path member 30 via the convex portion 24a, and is transmitted from the peripheral edge to the central portion of the flow path member 30, so that the entire flow path member 30 is heated. The left portion of the convex portion 24a is an elongated portion extending in the front-rear direction, and is arranged between the supply port 30e and the discharge port 30f and the leftmost individual electrode 20b. That is, since the convex portion 24a is arranged in the vicinity of the common flow path 30g, the heat of the heating member 28 can be immediately transferred to the ink flowing through the common flow path 30g, and feedback control can be realized with high accuracy. Further, since the heating member 28 is arranged above the COF 22, the size of the liquid ejection device in the longitudinal direction of the common flow path 30g can be reduced compared to the case where the heating member 28 is arranged outside the COF 22. .

（変更例）
図１０は、実施の形態１の構成を一部変更した変更例１に係るボディ２４を略示する底面図、図１１は、実施の形態１の構成を一部変更した変更例２に係るボディ２４を略示する底面図である。図１０に示すように、凸部２４ａの一部に切欠又は開口２４ｐを設けてよい。切欠又は開口２４ｐによって、ＣＯＦ２２と各個別電極２０ｂとを接合する複数のバンプが配置された空間の通気性を向上させることができる。また凸部２４ａは単数に限定されない。例えば図１１に示すように、複数の凸部２４ｑが設けられてもよい。この場合においても、左側の凸部２４ｑは、前後方向に沿って延びる細長い凸部２４ｑであって、供給口３０ｅ及び排出口３０ｆと、最も左端に位置する個別電極２０ｂとの間に配置される。流路部材３０の複数箇所に、複数の凸部２４ｑが当接することによって、流路部材３０に複数箇所から熱が伝達され、流路部材３０全体を均等に加熱させ易くなる。 (Change example)
FIG. 10 is a bottom view schematically showing a body 24 according to Modification 1 in which the configuration of Embodiment 1 is partially modified, and FIG. 11 is a body according to Modification 2 in which the configuration of Embodiment 1 is partially modified. 24 is a bottom view schematically showing 24; FIG. As shown in FIG. 10, a notch or opening 24p may be provided in a portion of the protrusion 24a. The notches or openings 24p can improve the air permeability of the space where the plurality of bumps that join the COF 22 and the individual electrodes 20b are arranged. Also, the number of protrusions 24a is not limited to one. For example, as shown in FIG. 11, a plurality of protrusions 24q may be provided. In this case as well, the left convex portion 24q is an elongated convex portion 24q extending along the front-rear direction, and is arranged between the supply port 30e and the discharge port 30f and the leftmost individual electrode 20b. . Since the plurality of projections 24q abut on the flow path member 30 at a plurality of locations, heat is transmitted to the flow path member 30 from a plurality of locations, and the entire flow path member 30 is easily heated uniformly.

図１２は、実施の形態１の構成を一部変更した変更例３に係る第１凸部、第２凸部、アクチュエータ及び流路部材を略示する模式的平面図である。図１２に示すように、加熱部材２８は、凸部２４ａに代えて、複数の凸部１２４ａを備えてもよい。複数の凸部１２４ａはそれぞれ、前後方向に沿って延びる細長い凸部１２４ａであって、供給口３０ｅと最も左端に位置する個別電極２０ｂとの間、排出口３０ｆと最も左端に位置する個別電極２０ｂとの間に配置される。凸部２４ａの前後幅は共通流路３０ｇよりも長く、前後方向にて凸部２４ａは共通流路３０ｇを横切るように設けられている。 FIG. 12 is a schematic plan view schematically showing a first convex portion, a second convex portion, an actuator, and a channel member according to Modification 3 in which the configuration of Embodiment 1 is partially changed. As shown in FIG. 12, the heating member 28 may have a plurality of protrusions 124a instead of the protrusions 24a. Each of the plurality of protrusions 124a is an elongated protrusion 124a extending in the front-rear direction, and is located between the supply port 30e and the leftmost individual electrode 20b, and between the outlet 30f and the leftmost individual electrode 20b. is placed between The front-to-rear width of the projection 24a is longer than the common flow path 30g, and the projection 24a is provided so as to cross the common flow path 30g in the front-rear direction.

なお供給口３０ｅと最も左端に位置する個別電極２０ｂとの間にのみ、凸部１２４ａを設けてもよい。この場合、供給口３０ｅから供給されたインクが加熱され、排出口３０ｆに向かって、加熱されたインクが共通流路３０ｇを通流し、流路部材３０全体が加熱される。また単数の凸部１２４ａのみ設けてもよい。なお、本実施形態の液体吐出装置１１においては、共通流路３０ｇ内のインクは、印刷動作中において供給口３０ｅから排出口３０ｆへ流れるものと説明した。しかし、複数のノズル３０ｄから吐出されるインクの単位時間当たりの総量が多くなるとき、排出口３０ｆから共通流路３０ｇへ向かうインクの流れが生じることもある。このように逆向きのインクの流れが生じる場合であっても、本実施形態であれば排出口３０ｆと個別電極２０ｂとの間に凸部１２４ａが配置されているため、共通流路３０ｇ内のインクの温度を適切な温度に調節することが容易となる。 The convex portion 124a may be provided only between the supply port 30e and the leftmost individual electrode 20b. In this case, the ink supplied from the supply port 30e is heated, the heated ink flows through the common channel 30g toward the discharge port 30f, and the entire channel member 30 is heated. Alternatively, only a single convex portion 124a may be provided. In addition, in the liquid ejection device 11 of the present embodiment, the ink in the common flow path 30g has been described as flowing from the supply port 30e to the discharge port 30f during the printing operation. However, when the total amount of ink ejected from the plurality of nozzles 30d per unit time increases, the ink may flow from the discharge port 30f toward the common flow path 30g. Even in the case where the ink flows in the opposite direction as described above, since the convex portion 124a is arranged between the discharge port 30f and the individual electrode 20b in the present embodiment, It becomes easy to adjust the temperature of the ink to an appropriate temperature.

図１３は、実施の形態１の構成を一部変更した変更例４に係る液体吐出装置１１を略示する部分拡大縦断面図である。図１３に示すように、フィルムヒータ２５とボディ２４を備えた加熱部材２８に代えて、流路部材３０に直接当接するフィルムヒータ１２５ａを使用してもよい。フィルムヒータ１２５ａは、前後方向に沿って延びる細長い形状であって、左右方向において供給口３０ｅとアクチュエータ２０の左端部との間の位置に配置される。流路部材３０にフィルムヒータ１２５ａを当接させることによって、インクに熱を伝達する効率を向上させることができる。 FIG. 13 is a partially enlarged vertical cross-sectional view schematically showing a liquid ejecting apparatus 11 according to Modification Example 4, in which the configuration of Embodiment 1 is partially changed. As shown in FIG. 13, instead of the heating member 28 having the film heater 25 and the body 24, a film heater 125a directly in contact with the channel member 30 may be used. The film heater 125a has an elongated shape extending in the front-rear direction, and is arranged at a position between the supply port 30e and the left end of the actuator 20 in the left-right direction. By bringing the film heater 125a into contact with the flow path member 30, the efficiency of transferring heat to the ink can be improved.

図１４は、実施の形態１の構成を一部変更した変更例５に係る液体吐出装置１１を略示する部分拡大縦断面図である。図１４に示すように、加熱部材２８に代えて、アクチュエータ２０に直接当接するフィルムヒータ１２５ｂを使用してもよい。フィルムヒータ１２５ｂは、前後方向に沿って延びる細長い形状であって、左右方向において供給口３０ｅとＣＯＦ２２の左端部との間の位置に配置される。アクチュエータ２０にフィルムヒータ１２５ｂを当接させることによって、ＣＯＦ２２を介してアクチュエータ２０に加熱部材２８を当接させる場合に比べて、インクに熱を伝達する効率を向上させることができ、且つ、流路部材３０に直接当接させる場合に比べて、共通流路３０ｇの長さ方向における寸法を短くすることができる。 FIG. 14 is a partially enlarged vertical cross-sectional view schematically showing a liquid ejection device 11 according to Modification Example 5 in which the configuration of Embodiment 1 is partially changed. As shown in FIG. 14, instead of the heating member 28, a film heater 125b directly in contact with the actuator 20 may be used. The film heater 125b has an elongated shape extending in the front-rear direction, and is arranged at a position between the supply port 30e and the left end of the COF 22 in the left-right direction. By bringing the film heater 125b into contact with the actuator 20, compared with the case where the heating member 28 is brought into contact with the actuator 20 via the COF 22, the efficiency of transferring heat to the ink can be improved, and the flow path can be improved. Compared to the case where the member 30 is directly abutted, the dimension in the length direction of the common flow path 30g can be shortened.

（実施の形態２）
以下本発明を実施の形態２に係るプリンタを示す図面に基づいて説明する。図１５は、アクチュエータ２０及び流路部材３０を略示する模式的平面図である。図１５に示すように、流路部材３０の左部に、供給口３０ｅ及び排出口３０ｆは一つずつ形成されている。なお供給口３０ｅ及び排出口３０ｆの数に対応させて、貫通孔２１ｂは二つ設けられ、貫通孔３２ｂも二つ設けられている。 (Embodiment 2)
The present invention will be described below with reference to the drawings showing a printer according to Embodiment 2. FIG. FIG. 15 is a schematic plan view schematically showing the actuator 20 and the flow path member 30. FIG. As shown in FIG. 15 , one supply port 30 e and one discharge port 30 f are formed in the left portion of the flow path member 30 . Two through-holes 21b and two through-holes 32b are provided corresponding to the number of supply ports 30e and discharge ports 30f.

流路部材３０の共通流路３０ｇは、平面視Ｕ状をなす第１流路１３１と、平面視Ｕ状をなす第２流路１３２を備える。第１流路１３１の内側に第２流路１３２は配置され、第１流路１３１及び第２流路１３２は並行するように配置されている。第１流路１３１の一端部と、第２流路１３２の一端部は、供給口３０ｅから二股に分かれた分岐流路１３３とに接続されている。第１流路１３１の他端部と、第２流路１３２の他端部は、排出口３０ｆから二股に分かれた分岐流路１３４と接続されている。 30 g of common flow paths of the flow-path member 30 are provided with the 1st flow path 131 which makes planar view U shape, and the 2nd flow path 132 which makes planar view U shape. The second channel 132 is arranged inside the first channel 131, and the first channel 131 and the second channel 132 are arranged in parallel. One end of the first flow path 131 and one end of the second flow path 132 are connected to a branch flow path 133 bifurcated from the supply port 30e. The other end of the first flow path 131 and the other end of the second flow path 132 are connected to a branch flow path 134 bifurcated from the discharge port 30f.

第１流路１３１の一端部、第２流路１３２の一端部、第１流路１３１の他端部、第２流路１３２の他端部に、それぞれ、加熱部材２８、例えば凸部１２４ａが設けられている。凸部１２４ａから第１流路１３１及び第２流路１３２に直接熱が伝達され、第１流路１３１及び第２流路１３２を流れるインクに効率良く熱が伝達される。なお凸部１２４ａに代えて、アクチュエータ２０の上面に直接貼り付けられたフィルムヒータを設けてもよい。 A heating member 28, for example, a convex portion 124a is provided at one end of the first flow path 131, one end of the second flow path 132, the other end of the first flow path 131, and the other end of the second flow path 132, respectively. is provided. Heat is directly transferred from the convex portion 124 a to the first flow path 131 and the second flow path 132 , and heat is efficiently transferred to the ink flowing through the first flow path 131 and the second flow path 132 . A film heater directly attached to the upper surface of the actuator 20 may be provided instead of the convex portion 124a.

（実施の形態３）
以下本発明を実施の形態３に係るプリンタを示す図面に基づいて説明する。図１６は、アクチュエータ２０及び流路部材３０を略示する模式的平面図である。図１６に示すように、左右方向に並んだ複数の個別電極２０ｂによる列が、前後方向に６列設けられている。流路部材３０の左端部には、前後方向に延びる細長い形状の一つの供給口３０ｅが配置され、流路部材３０の右端部には、前後方向に延びる細長い形状の一つの排出口３０ｆが配置されている。流路部材３０は、左右方向に延びた四つの共通流路１３０を備えており、四つの共通流路１３０は、それぞれ、供給口３０ｅ及び排出口３０ｆを接続する。最も前側に位置する共通流路１３０は、最も前側に位置する個別電極２０ｂの列に対応し、前から二つの目の共通流路１３０は、前から二つの目及び三つ目に位置する個別電極２０ｂの二つの列に対応し、前から三つ目の共通流路１３０は、前から四つの目及び五つ目に位置する個別電極２０ｂの二つの列に対応し、最も後側に位置する共通流路１３０は、最も後側に位置する個別電極２０ｂの列に対応する。 (Embodiment 3)
The present invention will be described below with reference to the drawings showing a printer according to Embodiment 3. FIG. FIG. 16 is a schematic plan view schematically showing the actuator 20 and the flow path member 30. FIG. As shown in FIG. 16, six rows of individual electrodes 20b arranged in the left-right direction are provided in the front-rear direction. One elongated supply port 30e extending in the front-rear direction is arranged at the left end portion of the flow channel member 30, and one elongated discharge port 30f extending in the front-rear direction is arranged at the right end portion of the flow channel member 30. It is The channel member 30 includes four common channels 130 extending in the left-right direction, and the four common channels 130 connect the supply port 30e and the discharge port 30f, respectively. The frontmost common channel 130 corresponds to the row of the frontmost individual electrodes 20b. The common channel 130, which corresponds to the two columns of the electrodes 20b and is the third from the front, corresponds to the two columns of the individual electrodes 20b which are the fourth and fifth from the front, and is located at the rearmost side. The common channel 130 corresponds to the row of the individual electrodes 20b located on the rearmost side.

加熱部材としての２つのフィルムヒータ１２４ｂが、供給口３０ｅと、最も左側に位置する個別電極２０ｂとの間に配置され、更に排出口３０ｆと、最も右側に位置する個別電極２０ｂとの間に配置されている。フィルムヒータ１２４ｂの前後幅は四つの共通流路１３０の前後幅の合計よりも長い。フィルムヒータ１２４ｂは、前後方向において、四つの共通流路１３０を横切るように配置されている。 Two film heaters 124b as heating members are arranged between the supply port 30e and the leftmost individual electrode 20b, and further arranged between the discharge port 30f and the rightmost individual electrode 20b. It is The front-to-rear width of the film heater 124 b is longer than the sum of the front-to-rear widths of the four common channels 130 . The film heater 124b is arranged across the four common flow paths 130 in the front-rear direction.

なお、供給口３０ｅと、最も左側に位置する個別電極２０ｂとの間、又は排出口３０ｆと、最も右側に位置する個別電極２０ｂとの間のいずれか一方にのみにフィルムヒータ１２４ｂを配置させてもよい。フィルムヒータ１２４ｂは四つの共通流路１３０に跨るように配置されているため、フィルムヒータ１２４ｂの熱は四つの共通流路１３０を流れるインクに効率良く伝達される。なお本実施形態のフィルムヒータ１２４ｂは、流路部材３０の上面に直接貼り付けられている。 The film heater 124b is arranged only between the supply port 30e and the leftmost individual electrode 20b or between the discharge port 30f and the rightmost individual electrode 20b. good too. Since the film heater 124b is arranged so as to straddle the four common flow paths 130, the heat of the film heater 124b is efficiently transferred to the ink flowing through the four common flow paths 130. FIG. Note that the film heater 124b of this embodiment is directly attached to the upper surface of the flow path member 30. As shown in FIG.

（実施の形態４）
以下本発明を実施の形態４に係るプリンタを示す図面に基づいて説明する。図１７は、アクチュエータ２０及び流路部材３０を略示する模式的平面図である。図１７に示すように、左右方向に並んだ複数の個別電極２０ｂによる列が偶数個設けられている。個別電極２０ｂによる偶数個の列は前後方向に並んでいる。流路部材３０の左端部に複数の供給口３０ｅが前後に並んでおり、流路部材３０の右端部に複数の排出口３０ｆが前後に並んでいる。流路部材３０は、左右方向に延びた複数の共通流路１３０を備えている。複数の共通流路１３０は、それぞれ、複数の供給口３０ｅ及び複数の排出口３０ｆを接続する。一つの共通流路１３０は二つの個別電極２０ｂの列に対応する。 (Embodiment 4)
The present invention will be described below with reference to the drawings showing a printer according to Embodiment 4. FIG. FIG. 17 is a schematic plan view schematically showing the actuator 20 and the flow path member 30. FIG. As shown in FIG. 17, an even number of rows of individual electrodes 20b arranged in the horizontal direction are provided. An even number of rows of individual electrodes 20b are arranged in the front-rear direction. A plurality of supply ports 30e are lined up in the front-rear direction at the left end of the flow path member 30, and a plurality of discharge ports 30f are lined up in the right end of the flow-path member 30 in the front-rear direction. The channel member 30 includes a plurality of common channels 130 extending in the left-right direction. The plurality of common channels 130 connect the plurality of supply ports 30e and the plurality of discharge ports 30f, respectively. One common channel 130 corresponds to two rows of individual electrodes 20b.

加熱部材としてのフィルムヒータ１２４ｂが、供給口３０ｅと、最も左側に位置する個別電極２０ｂとの間に配置され、更に排出口３０ｆと、最も右側に位置する個別電極２０ｂとの間に配置されている。例えば、図１７に示すように、三つの共通流路１３０に対して、一つのフィルムヒータ１２４ｂが配置されており、フィルムヒータ１２４ｂの前後幅は三つの共通流路１３０の前後幅の合計よりも長い。フィルムヒータ１２４ｂは、前後方向において、三つの共通流路１３０を横切るように配置されている。 A film heater 124b as a heating member is arranged between the supply port 30e and the leftmost individual electrode 20b, and further arranged between the discharge port 30f and the rightmost individual electrode 20b. there is For example, as shown in FIG. 17, one film heater 124b is arranged for three common flow paths 130, and the front-to-rear width of the film heater 124b is larger than the sum of the front-to-rear widths of the three common flow paths 130. long. The film heater 124b is arranged across the three common flow paths 130 in the front-rear direction.

フィルムヒータ１２４ｂは各共通流路１３０に当接し、加熱部材２８の熱は各共通流路１３０を流れるインクに効率良く伝達される。なお、供給口３０ｅと、最も左側に位置する個別電極２０ｂとの間、又は排出口３０ｆと、最も右側に位置する個別電極２０ｂとの間のいずれか一方にのみ、フィルムヒータ１２４ｂを配置させてもよい。なおフィルムヒータ１２４ｂをアクチュエータ２０に直接又はＣＯＦ２２を介して当接させてもよい。 The film heater 124b abuts on each common flow path 130, and the heat of the heating member 28 is efficiently transferred to the ink flowing through each common flow path 130. FIG. The film heater 124b is arranged only between the supply port 30e and the leftmost individual electrode 20b or between the discharge port 30f and the rightmost individual electrode 20b. good too. Incidentally, the film heater 124b may be brought into contact with the actuator 20 directly or through the COF 22. FIG.

（実施の形態５）
以下本発明を実施の形態５に係るプリンタを示す図面に基づいて説明する。図１８は、アクチュエータ２０及び流路部材３０を略示する模式的平面図である。図１８に示すように、左右方向に並んだ複数の個別電極２０ｂによる列が、複数設けられている。個別電極２０ｂによる複数の列は前後方向に並んでいる。流路部材３０の左端部に一つの供給口３０ｅが設けられており、流路部材３０の右端部に一つの排出口３０ｆが設けられている。流路部材３０は、左右方向に延びた複数の共通流路１３０を備えている。複数の共通流路１３０それぞれの左端部は、一つの供給口３０ｅから複数に分岐した分岐流路１３５と接続されており、複数の共通流路１３０それぞれの右端部は、一つの排出口３０ｆから複数に分岐した分岐流路１３６と接続されている。 (Embodiment 5)
The present invention will be described below with reference to the drawings showing a printer according to Embodiment 5. FIG. FIG. 18 is a schematic plan view schematically showing the actuator 20 and the flow path member 30. FIG. As shown in FIG. 18, a plurality of rows of individual electrodes 20b arranged in the horizontal direction are provided. A plurality of rows of individual electrodes 20b are arranged in the front-rear direction. One supply port 30 e is provided at the left end of the flow channel member 30 , and one discharge port 30 f is provided at the right end of the flow channel member 30 . The channel member 30 includes a plurality of common channels 130 extending in the left-right direction. The left end of each of the plurality of common channels 130 is connected to a branch channel 135 branched from one supply port 30e, and the right end of each of the plurality of common channels 130 is connected to one outlet 30f. It is connected to a branch flow path 136 branched into a plurality.

フィルムヒータ１２４ｂが、供給口３０ｅと、最も左側に位置する個別電極２０ｂとの間に配置され、更に排出口３０ｆと、最も右側に位置する個別電極２０ｂとの間に配置されている。例えば、図１８に示すように、三つの共通流路１３０に対して、フィルムヒータ１２４ｂが配置されており、フィルムヒータ１２４ｂの前後幅は三つの共通流路１３０の前後幅の合計よりも長い。フィルムヒータ１２４ｂは、前後方向において、三つの共通流路１３０を横切るように配置されている。 A film heater 124b is arranged between the supply port 30e and the leftmost individual electrode 20b, and further arranged between the discharge port 30f and the rightmost individual electrode 20b. For example, as shown in FIG. 18, the film heater 124b is arranged for three common flow paths 130, and the front-to-rear width of the film heater 124b is longer than the sum of the front-to-rear widths of the three common flow paths 130. FIG. The film heater 124b is arranged across the three common flow paths 130 in the front-rear direction.

なお、供給口３０ｅと、最も左側に位置する個別電極２０ｂとの間、又は排出口３０ｆと、最も右側に位置する個別電極２０ｂとの間のいずれか一方にのみ、フィルムヒータ１２４ｂを配置させてもよい。フィルムヒータ１２４ｂは各共通流路１３０に跨るように配置され、フィルムヒータ１２４ｂの熱は各共通流路１３０を流れるインクに効率良く伝達される。なお本実施形態のフィルムヒータ１２４ｂは、流路部材３０の上面に直接貼り付けられている。 The film heater 124b is arranged only between the supply port 30e and the leftmost individual electrode 20b or between the discharge port 30f and the rightmost individual electrode 20b. good too. The film heaters 124b are arranged across the common flow paths 130, and the heat of the film heaters 124b is efficiently transferred to the ink flowing through the common flow paths 130. FIG. Note that the film heater 124b of this embodiment is directly attached to the upper surface of the flow path member 30. As shown in FIG.

（実施の形態６）
以下本発明を実施の形態６に係るプリンタを示す図面に基づいて説明する。図１９は、アクチュエータ２０及び流路部材３０を略示する模式的平面図である。実施の形態６に係る液体吐出装置は、フィルムヒータ１２４ｃを除き、実施の形態５と同様な構成を有する。よって、以下の説明では、フィルムヒータ１２４ｃについてのみ述べる。図１９に示すように、左右方向に延びる細長い形状のフィルムヒータ１２４ｃがアクチュエータ２０の上面に配置されている。前後方向に延びるフィルムヒータ１２４ｂのみならず、左右方向に延びるフィルムヒータ１２４ｃを設けることによって、流路部材３０に平均的に熱が伝達され易くなる。 (Embodiment 6)
The present invention will be described below with reference to the drawings showing a printer according to Embodiment 6. FIG. FIG. 19 is a schematic plan view schematically showing the actuator 20 and the flow path member 30. FIG. The liquid ejecting apparatus according to Embodiment 6 has the same configuration as that of Embodiment 5 except for the film heater 124c. Therefore, only the film heater 124c will be described in the following description. As shown in FIG. 19, an elongated film heater 124c extending in the horizontal direction is arranged on the upper surface of the actuator 20. As shown in FIG. By providing not only the film heater 124b extending in the front-rear direction but also the film heater 124c extending in the left-right direction, heat is evenly transferred to the flow path member 30 easily.

なお上述した実施の形態１～６に係る吐出部材と加熱部材との当接位置の配置は、サーマルインクジェットプリンタにも適用可能である。また、上述した実施の形態１～６に係る液体吐出装置は、供給口３０ｅからインクを供給し、吐出されなかったインクを排出口３０ｆから排出させるものであると説明した。しかし、排出口３０ｆとして説明した開口を、共通流路にインクを供給するための供給口に変更し、共通流路の両端に設けられた供給口からそれぞれインクを供給する液体吐出装置に変更してもよい。そして、各供給口と個別電極との間において、吐出部材と加熱部材とを当接させるように加熱部材を配置してもよい。 The arrangement of the contact positions between the ejection member and the heating member according to Embodiments 1 to 6 described above can also be applied to a thermal inkjet printer. Further, the liquid ejecting apparatuses according to the first to sixth embodiments described above supply ink from the supply port 30e and discharge ink that has not been ejected from the discharge port 30f. However, the opening described as the discharge port 30f is changed to a supply port for supplying ink to the common channel, and the liquid ejection device is changed to supply ink from the supply ports provided at both ends of the common channel. may A heating member may be arranged between each supply port and the individual electrode so that the ejection member and the heating member are brought into contact with each other.

今回開示した実施の形態は、全ての点で例示であって、開示した発明を制限するものではないと考えられるべきである。各実施例にて記載されている技術的特徴は互いに組み合わせることができる。 It should be considered that the embodiments disclosed this time are illustrative in all respects and do not limit the disclosed invention. The technical features described in each embodiment can be combined with each other.

２０ アクチュエータ
２０ｂ 個別電極
２２ ＣＯＦ
２４ ボディ
２５ フィルムヒータ
２８ 加熱部材
３０ 流路部材
３０ｄ ノズル
３０ｅ 供給口
３０ｆ 排出口
３０ｇ 共通流路
１３１ 第１流路
１３２ 第２流路
１３３、１３４ 分岐流路
１２４ｂ フィルムヒータ
１２４ｃ フィルムヒータ 20 actuator 20b individual electrode 22 COF
24 body 25 film heater 28 heating member 30 channel member 30d nozzle 30e supply port 30f discharge port 30g common channel 131 first channel 132 second channel 133, 134 branch channel 124b film heater 124c film heater

Claims (15)

第１方向に並んだ複数の個別電極と、前記第１方向に沿って並んだ複数の個別流路と、前記第１方向に沿って並んだ複数のノズルと、前記複数の個別流路と連通する共通流路と、前記共通流路と連通する排出口とを備える吐出部材と、
少なくとも一部が、前記吐出部材に当接する加熱部材と
を備え、
前記複数の個別電極のうち、前記第１方向において端に位置する個別電極と、前記排出口とは、前記第１方向において離れており、
前記加熱部材の少なくとも一部は、前記端に位置する前記個別電極と前記排出口との間にて、前記吐出部材に当接する部分であり、
前記加熱部材は前記吐出部材に向けて突出した凸部を有し、
前記凸部が前記加熱部材の前記部分である
液体吐出装置。 A plurality of individual electrodes arranged in a first direction, a plurality of individual channels arranged along the first direction, a plurality of nozzles arranged along the first direction, and communicating with the plurality of individual channels. a discharge member including a common flow path and an outlet communicating with the common flow path;
a heating member at least partially in contact with the discharge member;
an individual electrode positioned at an end in the first direction among the plurality of individual electrodes and the discharge port are separated in the first direction;
at least part of the heating member is a portion that abuts on the discharge member between the individual electrode positioned at the end and the discharge port;
the heating member has a convex portion protruding toward the discharge member;
The liquid ejecting apparatus , wherein the convex portion is the portion of the heating member . 第１方向に並んだ複数の個別電極と、前記第１方向に沿って並んだ複数の個別流路と、a plurality of individual electrodes aligned in a first direction; a plurality of individual channels aligned along the first direction;
前記第１方向に沿って並んだ複数のノズルと、前記複数の個別流路と連通する共通流路とa plurality of nozzles arranged along the first direction; and a common channel communicating with the plurality of individual channels.
、前記共通流路と連通する排出口とを備える吐出部材と、, a discharge member comprising an outlet communicating with the common flow path;
少なくとも一部が、前記吐出部材に当接する加熱部材とa heating member at least partially in contact with the discharge member;
を備え、with
前記複数の個別電極のうち、前記第１方向において端に位置する個別電極と、前記排出口とは、前記第１方向において離れており、an individual electrode positioned at an end in the first direction among the plurality of individual electrodes and the discharge port are separated in the first direction;
前記加熱部材の少なくとも一部は、前記端に位置する前記個別電極と前記排出口との間にて、前記吐出部材に当接する部分であり、at least part of the heating member is a portion that abuts on the discharge member between the individual electrode positioned at the end and the discharge port;
前記吐出部材は前記共通流路と連通する供給口を備え、The discharge member has a supply port communicating with the common flow path,
前記第１方向にて、前記排出口と前記供給口とは互いに反対側に配置されており、the discharge port and the supply port are arranged opposite to each other in the first direction;
前記共通流路は前記第１方向に沿って延びており、The common flow path extends along the first direction,
前記吐出部材は、前記共通流路とは異なる他の共通流路を備え、the ejection member comprises another common flow path different from the common flow path,
前記共通流路及び前記他の共通流路は、共に前記排出口と連通し、both the common channel and the other common channel are in communication with the outlet;
前記共通流路及び前記他の共通流路は、共に前記第１方向に沿って延びるThe common channel and the other common channel both extend along the first direction
液体吐出装置。Liquid ejection device. 前記加熱部材は前記吐出部材に向けて突出した凸部を有し、
前記凸部が前記加熱部材の前記部分である
請求項２に記載の液体吐出装置。 the heating member has a convex portion protruding toward the discharge member;
The liquid ejecting apparatus according to claim 2 , wherein the convex portion is the portion of the heating member. 前記吐出部材は、
前記個別電極に印加された電圧によって駆動する圧電層を備えたアクチュエータと、
前記共通流路を有する流路部材と
を有する
請求項１から３のいずれか一つに記載の液体吐出装置。 The discharge member is
an actuator comprising a piezoelectric layer driven by a voltage applied to the individual electrodes;
The liquid ejecting apparatus according to any one of claims 1 to 3, further comprising a channel member having the common channel. 前記流路部材は金属部材によって構成された金属部分を含み、
前記加熱部材の前記部分は前記金属部分に当接している
請求項４に記載の液体吐出装置。 The flow path member includes a metal portion configured by a metal member,
5. The liquid ejector according to claim 4 , wherein said portion of said heating member is in contact with said metal portion. 前記アクチュエータと前記加熱部材との間に配置されたフィルムを備え、
前記加熱部材の前記部分は、前記フィルムを介して、前記アクチュエータに当接している
請求項４に記載の液体吐出装置。 a film disposed between the actuator and the heating member;
The liquid ejecting apparatus according to claim 4 , wherein the portion of the heating member is in contact with the actuator via the film. 前記フィルムはＣＯＦである
請求項６に記載の液体吐出装置。 The liquid ejecting apparatus according to claim 6 , wherein the film is COF. 前記共通流路は前記第１方向に沿って延び、
前記加熱部材の前記部分は、平面視で前記第１方向に対し交差する第２方向に延び、
前記加熱部材の前記部分は、前記第１方向と前記第２方向との２つの方向と直交する第３方向において、前記共通流路と重なる
請求項１から７のいずれか一つに記載の液体吐出装置。 the common flow path extends along the first direction;
the portion of the heating member extends in a second direction crossing the first direction in plan view;
The liquid according to any one of claims 1 to 7 , wherein the portion of the heating member overlaps the common flow path in a third direction perpendicular to the two directions of the first direction and the second direction. discharge device. 前記加熱部材の前記部分の前記第２方向における長さは、前記共通流路の前記第２方向における長さよりも長い
請求項８に記載の液体吐出装置。 The liquid ejecting apparatus according to claim 8 , wherein the length of the portion of the heating member in the second direction is longer than the length of the common flow path in the second direction. 前記吐出部材は前記共通流路と連通する供給口を備え、
前記第１方向にて、前記排出口及び前記供給口は同じ側に配置されており、
前記共通流路は、
前記排出口から、前記第１方向にて前記排出口及び前記供給口とは反対側に延びている第１部分と、
前記供給口から、前記第１方向にて前記排出口及び前記供給口とは反対側に延びている第２部分と、
前記第１部分と前記第２部分とを接続する第３部分と
を備える請求項１から９のいずれか一つに記載の液体吐出装置。 The discharge member has a supply port communicating with the common flow path,
the discharge port and the supply port are arranged on the same side in the first direction;
The common flow path is
a first portion extending from the discharge port in the first direction in a direction opposite to the discharge port and the supply port;
a second portion extending from the supply port in the first direction in a direction opposite to the discharge port and the supply port;
The liquid ejecting apparatus according to any one of Claims 1 to 9 , further comprising a third portion that connects the first portion and the second portion. 前記吐出部材は前記共通流路と連通する供給口を備え、
前記第１方向にて、前記排出口と前記供給口とは互いに反対側に配置されており、
前記共通流路は前記第１方向に沿って延びている
請求項１に記載の液体吐出装置。 The discharge member has a supply port communicating with the common flow path,
the discharge port and the supply port are arranged opposite to each other in the first direction;
The liquid ejection device according to claim 1, wherein the common flow path extends along the first direction. 前記加熱部材は、発熱体及び熱伝導体を有し、
前記熱伝導体の熱伝導率は、前記吐出部材における前記加熱部材の前記部分と当接する部分の熱伝導率よりも高い
請求項１から１１のいずれか一つに記載の液体吐出装置。 The heating member has a heating element and a heat conductor,
The liquid ejecting apparatus according to any one of claims 1 to 11 , wherein the thermal conductivity of the heat conductor is higher than that of a portion of the ejection member that contacts the portion of the heating member. 前記吐出部材は、前記共通流路とは異なる他の共通流路を備え、
前記共通流路及び前記他の共通流路は、共に前記排出口と連通し、
前記共通流路及び前記他の共通流路は、共に前記第１方向に沿って延びる
請求項１１に記載の液体吐出装置。 the ejection member comprises another common flow path different from the common flow path,
both the common channel and the other common channel are in communication with the outlet;
12. The liquid ejecting apparatus according to claim 11 , wherein the common channel and the other common channel both extend along the first direction. 前記吐出部材は、
前記排出口と連通し、前記排出口から分岐した第１分岐流路と、
前記排出口と連通し、前記排出口から分岐した第２分岐流路と
を備え、
前記共通流路は、前記第１分岐流路を介して前記排出口と連通し、
前記他の共通流路は、前記第２分岐流路を介して前記排出口と連通する
請求項１３に記載の液体吐出装置。 The discharge member is
a first branch channel that communicates with the outlet and branches from the outlet;
a second branch channel that communicates with the outlet and branches from the outlet,
the common channel communicates with the outlet via the first branch channel;
14. The liquid ejection device according to claim 13 , wherein the other common channel communicates with the discharge port via the second branch channel. 前記加熱部材の前記部分は、平面視において前記第１方向と交差する第２方向に沿って延び、
前記加熱部材の前記部分は、前記第１方向と前記第２方向とに直交する第３方向において前記共通流路と重なる第１部分と、前記他の共通流路と重なる第２部分とを有する
請求項１３に記載の液体吐出装置。 the portion of the heating member extends along a second direction that intersects with the first direction in plan view;
The portion of the heating member has a first portion that overlaps with the common channel in a third direction orthogonal to the first direction and the second direction, and a second portion that overlaps with the other common channel. 14. The liquid ejection device according to claim 13 .
JP2018185891A 2018-09-28 2018-09-28 Liquid ejector Active JP7255122B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2018185891A JP7255122B2 (en) 2018-09-28 2018-09-28 Liquid ejector
US16/565,674 US11052659B2 (en) 2018-09-28 2019-09-10 Liquid discharge apparatus
EP19196785.0A EP3628493B1 (en) 2018-09-28 2019-09-11 Liquid discharge apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2018185891A JP7255122B2 (en) 2018-09-28 2018-09-28 Liquid ejector

Publications (2)

Publication Number Publication Date
JP2020055153A JP2020055153A (en) 2020-04-09
JP7255122B2 true JP7255122B2 (en) 2023-04-11

Family

ID=67928753

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2018185891A Active JP7255122B2 (en) 2018-09-28 2018-09-28 Liquid ejector

Country Status (3)

Country Link
US (1) US11052659B2 (en)
EP (1) EP3628493B1 (en)
JP (1) JP7255122B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2022147923A (en) * 2021-03-24 2022-10-06 セイコーエプソン株式会社 Liquid jetting head and liquid jetting device
WO2024018801A1 (en) * 2022-07-22 2024-01-25 パナソニックＩｐマネジメント株式会社 Inkjet head

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006255994A (en) 2005-03-16 2006-09-28 Seiko Epson Corp Droplet discharging device, and droplet discharging method
JP2008055899A (en) 2006-08-02 2008-03-13 Brother Ind Ltd Liquid transferring apparatus and inkjet printer
JP2009241427A (en) 2008-03-31 2009-10-22 Brother Ind Ltd Liquid droplet ejector
JP2012006224A (en) 2010-06-24 2012-01-12 Brother Industries Ltd Liquid droplet jet device
WO2012165378A1 (en) 2011-05-28 2012-12-06 京セラ株式会社 Liquid discharge head and recording device using same
JP2013154561A (en) 2012-01-31 2013-08-15 Brother Industries Ltd Droplet discharging device
US20130321532A1 (en) 2012-05-29 2013-12-05 Xerox Corporation Screen printed jet stack heater
JP2015085683A (en) 2013-09-27 2015-05-07 ブラザー工業株式会社 Liquid ejection device
JP2016030332A (en) 2014-07-25 2016-03-07 京セラ株式会社 Film heater, ink jet head, and ink jet printer
JP2016043616A (en) 2014-08-25 2016-04-04 京セラ株式会社 Piezoelectric actuator substrate, and liquid discharge head and recording device using the same
JP2016182824A (en) 2012-08-30 2016-10-20 京セラ株式会社 Liquid discharge head, recording apparatus with use of same
JP2018012291A (en) 2016-07-22 2018-01-25 ブラザー工業株式会社 Head module, liquid discharge device, and case

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07276635A (en) * 1994-04-15 1995-10-24 Hitachi Koki Co Ltd Ink jet printer
JP4831305B2 (en) 2005-11-14 2011-12-07 ブラザー工業株式会社 Inkjet head
US20070263038A1 (en) 2006-05-12 2007-11-15 Andreas Bibl Buried heater in printhead module
US7874652B2 (en) 2006-08-02 2011-01-25 Brother Kogyo Kabushiki Kaisha Liquid transporting apparatus and ink-jet printer
EP2287006B1 (en) 2006-12-22 2012-11-21 Fujifilm Dimatix, Inc. Adjustable mount printhead assembly
JP2011136462A (en) 2009-12-28 2011-07-14 Seiko Epson Corp Liquid droplet ejecting head and liquid droplet ejecting device
JP2011207077A (en) 2010-03-30 2011-10-20 Seiko Epson Corp Liquid ejecting head, liquid ejecting head unit, and liquid ejecting apparatus
US9132645B2 (en) 2012-11-29 2015-09-15 Palo Alto Research Center Incorporated Pulsating heat pipe spreader for ink jet printer
JP6536130B2 (en) * 2015-03-31 2019-07-03 ブラザー工業株式会社 Liquid discharge head and liquid discharge device
WO2016185627A1 (en) 2015-05-19 2016-11-24 株式会社ヒットデバイス Building material discharge head, building method, flow path structure, and heating plate for discharging building material from flow path
JP6819113B2 (en) 2016-07-22 2021-01-27 ブラザー工業株式会社 Head module and liquid discharge device
JP2018051768A (en) 2016-09-26 2018-04-05 セイコーエプソン株式会社 Liquid jet head and liquid jet device
JP6841133B2 (en) * 2017-03-31 2021-03-10 ブラザー工業株式会社 Liquid discharge device

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006255994A (en) 2005-03-16 2006-09-28 Seiko Epson Corp Droplet discharging device, and droplet discharging method
JP2008055899A (en) 2006-08-02 2008-03-13 Brother Ind Ltd Liquid transferring apparatus and inkjet printer
JP2009241427A (en) 2008-03-31 2009-10-22 Brother Ind Ltd Liquid droplet ejector
JP2012006224A (en) 2010-06-24 2012-01-12 Brother Industries Ltd Liquid droplet jet device
WO2012165378A1 (en) 2011-05-28 2012-12-06 京セラ株式会社 Liquid discharge head and recording device using same
JP2013154561A (en) 2012-01-31 2013-08-15 Brother Industries Ltd Droplet discharging device
US20130321532A1 (en) 2012-05-29 2013-12-05 Xerox Corporation Screen printed jet stack heater
JP2016182824A (en) 2012-08-30 2016-10-20 京セラ株式会社 Liquid discharge head, recording apparatus with use of same
JP2015085683A (en) 2013-09-27 2015-05-07 ブラザー工業株式会社 Liquid ejection device
JP2016030332A (en) 2014-07-25 2016-03-07 京セラ株式会社 Film heater, ink jet head, and ink jet printer
JP2016043616A (en) 2014-08-25 2016-04-04 京セラ株式会社 Piezoelectric actuator substrate, and liquid discharge head and recording device using the same
JP2018012291A (en) 2016-07-22 2018-01-25 ブラザー工業株式会社 Head module, liquid discharge device, and case

Also Published As

Publication number Publication date
JP2020055153A (en) 2020-04-09
EP3628493A1 (en) 2020-04-01
US20200101737A1 (en) 2020-04-02
EP3628493B1 (en) 2024-02-28
US11052659B2 (en) 2021-07-06

Similar Documents

Publication Publication Date Title
JP6536130B2 (en) Liquid discharge head and liquid discharge device
JP5569092B2 (en) Liquid ejecting head, liquid ejecting head unit, and liquid ejecting apparatus
US10022964B2 (en) Head module and liquid jetting apparatus including the same
JP7255122B2 (en) Liquid ejector
US8398213B2 (en) Liquid ejecting head unit
JP6743831B2 (en) Inkjet head and inkjet recording device
JP6413805B2 (en) Liquid ejection device
JP2005081597A (en) Inkjet head
JP6686815B2 (en) INKJET HEAD, INKJET RECORDING DEVICE, AND INKJET HEAD MANUFACTURING METHOD
US10967635B2 (en) Liquid discharge head
JP6841133B2 (en) Liquid discharge device
JP7102905B2 (en) Recording device and wiring members
JP6691678B2 (en) Inkjet recording head and inkjet recording apparatus including the same
JP2019155839A (en) Liquid discharge head and liquid discharge device
US7441878B2 (en) Ink jet recording head including temperature adjustment heater
JP7476615B2 (en) HEAD MODULE AND PRINTING APPARATUS EQUIPPED WITH SAME
JP2019166739A (en) Liquid discharge head and inkjet printer
US11912033B2 (en) Line head assembly, printing apparatus provided with line head assembly, and method of flowing liquid in line head assembly
JP7468070B2 (en) HEAD MODULE AND PRINTING APPARATUS EQUIPPED WITH SAME
JPWO2017169681A1 (en) Inkjet head and inkjet recording apparatus
JP2021160139A (en) Head module, and printer provided with the same
JP2022173688A (en) Liquid jet device and sub-carriage
JP2023057887A (en) Liquid discharge head and device for discharging liquid
JP2023065264A (en) head system
JP2021049746A (en) Heater assembly, head module and printer equipped with those

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20210924

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20220715

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20220726

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20220920

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20221108

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20221219

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20230117

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20230216

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20230228

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20230313

R150 Certificate of patent or registration of utility model

Ref document number: 7255122

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150